A) \[20.0\,V\]
B) \[18.26\,V\]
C) \[21.74\,V\]
D) None of these
Correct Answer: C
Solution :
[c] Induced emf. \[\left| \left. e \right| \right.=\frac{d\phi }{dt}=A\left( \frac{dB}{dt} \right)\] \[=\frac{2\times 2}{2}\times \frac{d}{dt}(0.042-0.87t)=2\times 0.87=1.74V\] The net induced emf\[=20+1.74=21.74\,V\]You need to login to perform this action.
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